The Siglit are group of Inuit residing in the delta of the Mackenzie River. They are a part of the Inuvialuit, a group also including the Uummarmiut and the Copper Inuit. They speak Siglitun, a severely-endangered dialect of Inuvialuktun.
The Siglit mainly live in Paulatuk, Tuktoyaktuk, both on the mainland, and Sachs Harbour on Banks Island.
There are (possibly) 8 tribes/groups within the Siglit:
References
Siglit Wikipedia(Text) CC BY-SA